茂汶断裂耿达—汶川段主要发育于以花岗岩为主的前寒武系彭灌杂岩体中，韧性变形特征十分明显，在龙门山主干断裂带中具有重要地位。研究表明它是一个由多条断层组成的一个构造应变强化地带，也是一个具多期活动性的破裂带。它是龙门山区发育最早、规模最大的断裂之一。文章还对其形成的构造物理条件和构造意义等进行了讨论 The Moghand-Wenchuan segment of the Maowen fault mainly develops in the pre-Cambrian Peng-Gou complex with predominant granite. The characteristics of ductile deformation are obvious and play an important role in the Longmen Shan main fault zone. Studies have shown that it is a tectonic strain zone composed of multiple faults and a multi-period rupture zone. It is one of the earliest and largest faults in the Longmenshan area. The article also discusses the tectonic physical conditions and structural significance of the formation